Razor-sharpening mechanism



Feb. 3. 1925. 1,524,339.

E. M. A. SILLANDER' 1 RAZOR SHARPENING MECHANISM Filed May v 11, 1921 Patented Feb. 3, 1925.

UNITED STATES 1,524,889 PATENT oFFicn.

ERNST M. A. SILLANDER, OF KLOTZSCHE BEI DRESDEN, GERMANY, AS-SIGNOR TO PAUL A. FLANDERS, OF NEW YORK, N, Y.

.RAZOR-SHARPENING MECHANISM.

Application filed May 11,

mechanism and particularly to devices for sharpening and honing razor blades.

One object of the invention is to provide a simple and compact device for quickly sharpening or honing razor blades, particularly safety razor blades.

A further object is to provide a device of a this character which will sharpen double edged blades and which will, at the same time, move the blade transversely of the sharpening instrumentality.

A still further object is to provide a device of this character which is adapted both to sharpen and to hone blades.

The invention consists in the novel arrangements, constructions, and combinations, to be hereinafter described and claimed, for carrying out the above stated objects and such other objects as will appear from the following description.

The invention is illustrated in a preferred embodiment in the accompanying drawing, wherein Fig. 1 is a perspective view of the device arranged for sharpening a double edged safety sazor blade. 7 V

Fig. 2 is a transverse section taken through the device near'the end of the blade holder and showing the device in ele vation.

Fig. 3 is a transverse section through the device, taken on a plane passing through the razor blade holder and through the screw member.

Fig. 1 is a longitudinal section taken through the body of the device.

Fig. 5 is a perspective view of the screw for fastening the blade holder in position, and V Fig. 6 is a perspective view of the blade holder.

Like characters of reference designate like parts in the several figures of the draw- In the drawing, 10 designates the body of a housing which is channel shaped in form and open at the ends and top. A cover 11 the device.

flange 12 hav1ng a protuberance 13 which H 'PIOJGCtS in a corresponding recess in the 1921. Serial No. 468,526.

having a top portion and an end portion is adapted to cover one end and the top of The cover is provided with a bottom of the body and a flange 14. which snaps into corresponding recesses 15 in the s1de s of the body for the purpose of hold mg the cover in place. The cover may be removed by prying the flange 14 out of the recesses and lifting the cover off. The metal of the cover is sufficiently resilient so that the flange 14 will snap into place when the cover is applied.

A pair of shafts 16 project from the sides of the body and are provided at or near-their ends with removable sharpening or honing wheels 17 which are fastened in place on the shafts by wing nuts 18. The sharpening wheels are made of any suitable abrasive material and are adapted to be replaced by wheels of leather or equivalent material for thepurpose of honing a blade after sharpening. Driving pulleys 19 are supported on the shafts 16 within the body and are keyed thereto or otherwise suitably secured thereto. A screw member or driving screw 20 is supported by the body in a position between the shafts 16 and parallel thereto. Supported on the screw member within the body is a nut 21 internally threaded to correspond with the threads on the screw member and having a cylindrical exterior. The nut is adapted to turn freely within the body but is prevented by the sides thereof from any considerable lateral movement. The screw member 20 is hollow throughout and is adapted to receive in one end a blade holder 22. .The blade holder comprises a pair of clamping members 23 and 24: formed integraland having at one end a spring loop 25. The other ends of the clamping members 23 and 24; are formed with semi-cylindrical extremities -26 of a size to fit within the screw member 20 and being'formed with complementary internal threads 27. The blade holder is adapted to be held in fixed relation relative to the screw member by a fastening screw 28, the shank 29 of which is threaded to engage the internal threads 27 on the blade holder. The fastening screw is adapted to be tightened by hand by operating the head 30 and to clamp the shoulders 31 of the blade holders against the end of the screw member. The head of the fastening screw is made of such a size so as to act as a stop and prevent the screw member from passing out of the nut 21. The clamping members 23 and 24: of the blade holder may be provided with means suitable for holding the particular blade intended to be sharpened. For purpose of illustration I have shown the blade holder adapted to hold a razor blade customarily provided with a pair of holes employed to hold the blade in the razor. As illustrated the 1nember 23 is formed with -a pair of bosses or protuberances 32 which are adapted to extend through the openings in the razor blade and project int-o corresponding openings 33 in the member 24. The spring loop 25 is adapted to exert a pressure on the razor blade when the ends 26 are brought together and firmly clamp the razor blade in place.

A driving belt 34 made of suitable mate rial, such as fabric, passes over the pulleys 19 and nut 21 for the purpose of rotating the same. Suitable idler pulleys 35 are supported within the body between the pulleys and the nut 21 and also beyond, the pulleys for the purpose of increasing the arc of contact of the belt with the pulleys and nut 21.. The rear idler pulley 35 is supported in position by the extremities 36 of the handle 37. Suitable openings are made in the sides of the body which permit the extremities 36 to pass therethrough and into the idler. The resilient character of the metal of the hook or handle 37 retains the same in place. The other idler pulleys 35 are supported in the body by suitable pins. Suitable handles 38 are provided at the ends of the belt 34 so that the same may be grasped to operate the sharpening mechanism.

In operating the sharpening mechanism, the handle 37 is hooked over a suitable hook and the belt is drawn back and forth so as to rotate the sharpening wheels and the nut 21 first in one direction and then in the other. lVhen the lower handle 38 of the belt is pulled outwardly, the grinding wheels are adapted to rotate in a counterclockwise direct-ion, as viewed from the front of Fig. l. The nut 21 also rotates in a counter-clockwise direction and moves the blade and blade holder in or out, depending on whether the screw of the screw member is right or left handed. For the purpose of illustration I have shown a right handed screw. Accordingly the blade holder moves outwardly when the grinding wheels rotate in a counter-clockwise direction, and inwardly when they rotate in a clockwise direction. The friction between the screw member and nutis sufficient to press the edge of the blade against the sl'iarpening wheel. For the purpose of illustration I have shown a double edged blade in the holder. As shown, for instance, in Fig. 2, when the grinding wheels rotate in a counter-clockwise direction, one edge of the blade engages one wheel and the other edge engages the other wheel. lVhen the direction of rotation is reversed, the friction of the nut on the screw member rotates the blade holder in a clockwise direction and causes the opposite sides of the blade to engage the grinding wheels. At the same time the blade is drawn in a reverse direction across the face of the grinding wheels. It should be noted that the grind ing wheels travel away from the edge of the blade at the point of contact. This direc tion of travel may be reversed. if desirable.

For a single edged blade, one of the sh arp ening wheels and shafts may be dispensed with. In this case, the blade holder carries the edge of the blade from a position in contact with the lower side of the wheel to a position. in contact with the upper side of the wheel upon a reversal of rotation. However in order to adapt a device for sharpening double edged blades. it is preferable to employ two grinding wheels. Such a construction is adapted as well to sharpen a single edged blade.

In order to hone a blade after the same has been suitably sharpened, the abrasive wheels 17 may be removed by unscrewing the wing nuts 18 and honing wheels made of leather or the like may be substituted. In order to remove the blade from the holder, the fastening screw 28 is unscrewed and the blade holder withdrawn from the screw member. The loop 25 being resilient, the members 23 and 24 spring apart and the blade may be easily withdrawn.

I claim:

1. In mechanism of the class described. the combination of a rotary sharpener, a blade holder in operative relation thereto and having a screw threaded driving member, a revoluble nut engaging'said member. and means for rotating said sharpener and nut.

2. In mechanism of the class described, the combination of a rotary sharpener, a vlade holder in operative relation thereto and having a screw threaded driving memher, a revoluble nut engaging said member, and means for rotating said sharpener and nut, said means adapted to permit the re versal of rotation of said nut.

3. In mechanism of the class described, the combination of a body, a rotary sharpener supported by said body and having a driving pulley thereon, a blade holder dis posed in operative relation to said sharpener and having a screw threaded driving mem ber supported by said body, a cylindrical nut engaging said member, and a driving belt engaging said pulley and nut for rotating said sharpener and moving said blade holder across the face of said sharpener.

4. In mechanism of the class described, the combination of a body having a pulley and a driving screw rotatably mounted thereon, a shaft extending from said pulley and having thereon a rotary sharpener, a blade holder carried by said screw and adapted to hold a blade in operative relation to said sharpener, a revoluble nut on said screw disposed within said body and held against lateral movement, and a driving belt running over said pulley and nut for rotating said sharpener and moving the blade across the face of said sharpener.

5. In mechanism of the class described, the combinatioin of a pair of rotary sharpeners, a driving screw carrying a blade holder disposed in operative relation to said sharpeners, a revoluble nut on said driving screw held against lateral movement, and means for rotating said nut and said sharpener.

6. In mechanism of the class described, the combination of a pair of rotary sharpeners, a driving screw carrying a blade holder disposed in operative relation to said sharpeners, a revoluble nut on said driving screw held against lateral movement, and means for rotating said nut and said sharpener in the same direction, said means adapted to permit the simultaneous reversal. of the direction of rotation of said sharpeners and nut.

7. In mechanism of the class described, the combination of a pair of rotary sharpeners, a driving screw, a removable blade holder carried bv said screw and adapted to support a blade in operative relation to said sharpeners, a re-voluble nut on said driving screw held against lateral movement and means for rotating said nut and said Sharpeners.

8. In mechanism of the class described, the combinatioin of a pair of rotary sharpencrs, a hollow driving screw, a removable blade holder comprising separable members adapted to hold a blade between the same and having a screw threaded end inserted in one end of said driving screw, a fastening screw inserted within the other end of said driving screw and adapted to engage the threaded end of said blade holder, said blade holder being supported in operative relation to said sharpcners, and means cooperating with the screw for moving the holder and blade laterally with respect to the sharpeners.

9. Sharpening mechanism of the class described comprising in combination, a body having spaced walls, a pair of pulleys mounted between the walls of the body and having parallel shafts projecting from the sides of said bodv. a screw member parallel to said shafts and supported by said body, removable sharpening wheels on said shafts, a blade holder carried bv said screw member and adapted to support a blade in operative relation to said sharpening wheels, a cylindrical nut on said screw member between the walls of said body and prevented there by from lateral movement, and a. driving belt passing over said nut and pulleys.

10. J Sharpening mechanism of the class de scribed comprising in combination, a body having spaced walls, a pair of pulleys mounted between the walls of the body and having parallel shafts proiecting from the: sides of said bodv. a screw member parallel. to said shafts and supported by said body,- removable sharpening wheels on said shafts. a blade holder carried bv said screw member and adopted. to support a blade in operative relation to said sharpening wheels, a cylindrical nut on said screw member between the walls of said body and prevented thereby from lateral movement, idler pulleys supported in said body, and a belt passing alternately over said idlers and said pulleys and said nut.

11. Sharpening mechanism of the class described comprising in combination, a body having spaced walls, a pair of pulleys mounted between the walls of the body and having parallel shafts projecting from the sides of said body, a screw member parallel to said shafts and supported by said body, removable sharpening wheels on said shafts, a blade holder carried by said screw member andadapted to support a blade in operative relation to said sharpening wheels, a cylindrical nut on said screw member between the walls of said body and prevented thereby from lateral movement, a driving belt passing over said nut and pulleys, a removable cover over said body, and a handle whereby said body may be supported for operation.

12. Sharpening mechanism of the class described comprising in combination, a body having spaced walls, a pair of pulleys mounted between the walls of the body and having parallel shafts projecting from the sides of said body, a screw member parallel to said shafts and supported by said body, removable sharpening wheels on said shafts, a blade holder carried by said screw member and adapted to support a blade in operative relation to said sharpening wheels, a cylindrical nut on said screw member between the walls of said body and prevented thereby from lateral movement, idler pulleys supported in said body, a belt passing alternately over said idlers and said pulleys and said nut, and a handle for supporting said body and having ends which pass into said body and support one of said idlers.

13. Sharpening mechanism of the class described comprising in combination, a channel shaped body open at the top and ends, a pair of pulleys mounted between the walls of the body and having parallel shafts projecting from the sides of said body, a

loo

screw member parallel to said shafts and supported by said body, removable'sha'r aening Wheels on said shafts, a blade holder carried by said screw member and adapted to support a blade in operative relation to said sharpening Wheels, a cylindrical nut on said screw member between the alls of said body and prevented thereby from lateral movement, adriving belt passing over said nut and pulleys, and a removable cover covering one end of said body and said top and leaving a space at the other end to per- 1nit said belt to pass to the exterior.

14. In a mechanism of the class described, the combination of housing, a pair of rotary shafts and a hollow reciprocatory sleeve projecting from said housing, a sharp e'ner remo'vably secured on each of said shafts, a blade-holder and means for removably securing the holder in said sleeve,

ably securing the holder in the sleeve, and

means Within the housing for simultaneously rotating the shaft and reciprocating the sleeve.

ERNST M. A. SILLANDER.

Witnesses N. GAUDEs BOWEN, HELENE LEHMANN. 

